Pie in the sky is an idiom used to describe an unrealistic or unlikely situation. As it is a slang term, there are not specific antonyms, but words that can be used as potential opposites to this phrase include achievable, realistic, tangible, and concrete. Achievable refers to a goal that is possible to attain. Realistic generally means something that is reasonable, practical and grounded in reality. Tangible and concrete imply a physical presence or substance that can be seen or touched. Therefore, instead of aiming for pie in the sky dreams, it may be more beneficial to focus on attainable, realistic, tangible and concrete goals.